With all due respect that sounds way too high. My understanding is that it is somewhere between 6500-6800 lbs. Are you sure the TB 5.3 -V-8 can tow/trailer 11,000 ilbs? I'm not sure even the Tahoe can handle 11,000lbs ?

Sorry you are correct the 11000-11500 is the gross combination weight for the vehicle.Here are the tow capacities from the manual.

Vehicle

Axle Ratio

Max. Trailer Wt.

*GCWR

2WD TrailBlazer (4.2 L L6 Engine)

3.42

5,400 lbs (2 449 kg)

10,000 lbs (4 536 kg)

3.73

5,900 lbs (2 676 kg)

10,500 lbs (4 763 kg)

4.10

6,400 lbs (2 903 kg)

11,000 lbs (4 990 kg)

4WD TrailBlazer (4.2 L L6 Engine)

3.42

5,200 lbs (2 359 kg)

10,000 lbs (4 536 kg)

3.73

5,700 lbs (2 585 kg)

10,500 lbs (4 763 kg)

4.10

6,200 lbs (2 812 kg)

11,000 lbs (4 990 kg)

2WD TrailBlazer (5.3 L V8 Engine)

3.42

6,300 lbs (2 858 kg)

11,000 lbs (4 990 kg)

3.73

6,800 lbs (3 084 kg)

11,500 lbs (5 216 kg)

4WD TrailBlazer (5.3 L V8 Engine)

3.42

6,100 lbs (2 767 kg)

11,000 lbs (4 990 kg)

3.73

6,600 lbs (2 994 kg)

11,500 lbs (5 216 kg)

**2WD TrailBlazer SS (6.0 L V8 Engine)

4.10

6,800 lbs (3 084 kg)

11,500 lbs (5 216 kg)

**AWD TrailBlazer SS (6.0 L V8 Engine)

4.10

6,600 lbs (2 994 kg)

11,500 lbs (5 216 kg)

*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversion. The GCWR for the vehicle should not be exceeded.